Cessna 172RG Cracked Main Gear Actuator The crew heard a noise when the landing gear was retracted. The left landing gear remained in a partially retracted position, unable to retract or extend. A successful gear-up landing ensued. 288
Cracking And Sticking
The crew heard a noise when the landing gear was retracted. The left landing gear remained in a partially retracted position, unable to retract or extend. A successful gear-up landing ensued. The l/h landing gear actuator body (p/n 128101-3) had cracked at the forward mounting bolt hole, allowing the actuator bore to open enough that the piston would not engage the pivot sector gear sufficiently to move the landing gear.
Key Takeaways:
- A Cessna 172RG experienced a gear-up landing due to a cracked main landing gear actuator body.
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- Several ECI Revision 3 "E" series cylinders on Continental IO-520 engines were found to have internal cracks behind the fuel injector after relatively low operating times.
- A Sensenich wooden propeller on a Piper PA-18-150 became loose after only 31 hours due to multiple bolts backing out, broken safety wire, and a fractured attachment bushing.
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